改性粘土去除润滑油中碱性氮化物的研究

IF 1.1 4区地球科学 Q4 CHEMISTRY, PHYSICAL

Clay Minerals Pub Date : 2021-12-01 DOI:10.1180/clm.2022.6

Ming-Rui Chen, Naiwang Liu, Li Shi, Xuan Meng

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引用次数: 0

摘要

摘要为了提高炼油过程中粘土的去除效率，探讨相关因素，阐明碱性氮化物的去除机理，制备了一系列改性粘土，对润滑油中的碱性氮化物进行了去除试验。添加1wt.%FeCl3后，碱性氮化物的去除率从33.6%提高到43.3%。此外，酸度和氯含量没有超过可接受的水平。通过N2吸附-解吸、粒度分布、傅立叶变换红外光谱和X射线衍射等测试方法验证了去除机理。碱性氮化物的去除率主要与路易斯酸位点的密度有关。傅立叶变换红外光谱证实了络合反应的存在。碱性氮化物通过Fe3+络合作用进行化学吸附去除。

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Removal of alkaline nitride from lubricating oil by modified clays

Abstract In order to improve the removal efficiency of clays in oil refining, to explore the related factors and to clarify the removal mechanism of alkaline nitride, a series of modified clays was prepared to test removal of alkaline nitride from lubricating oil. After the addition of 1 wt.% FeCl3, the removal rate of alkaline nitride increased from 33.6% to 43.3%. Furthermore, the acidity and chlorine content did not exceed acceptable levels. The testing methods of N2 adsorption–desorption, particle-size distribution, Fourier-transform infrared spectroscopy and X-ray diffraction were conducted to verify the removal mechanism. The removal rate of alkaline nitride is mainly related to the density of Lewis acid sites. The Fourier-transform infrared spectra confirmed the existence of the complexation reaction. The basic nitrides were removed by chemical adsorption via Fe3+-complexation.

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来源期刊

Clay Minerals 地学-矿物学

CiteScore

3.00

自引率

20.00%

发文量

审稿时长

6 months

期刊介绍： Clay Minerals is an international journal of mineral sciences, published four times a year, including research papers about clays, clay minerals and related materials, natural or synthetic. The journal includes papers on Earth processes soil science, geology/mineralogy, chemistry/material science, colloid/surface science, applied science and technology and health/ environment topics. The journal has an international editorial board with members from fifteen countries.